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PARAMAgNETIC MEISSNER EFFECTS IN MELT-TEXTURED Y_(0.99)Nd_(0.01)Ba_2Cu_3O_(7-y)SUPERCONDUCTOR

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Acta Metallurgica Sinica(English Letters) 2002年第3期15卷 295-298页

作者： Y.T. Xing Y.Z. wang g.w. Qiao Institute of Metal Research The Chinese Academy of Sciences Shenyang 110016 China

The paramagnetic Meissner effect (PME) was observed on the field-cooled M-T curves of melt-textured Y0.99Nd0.01Ba2Cu3O7-y in applied magnetic fields from 1kOe to 40kOe. In the magnetic field below 1kOe, the sample undergoes the typical transition from the normal state to the superconducting state when it was cooled down. The applied magnetic fields in which the PME occurs, are very high compared with the fields reported in literatures. we propose that the occurrence of the PME may be due to a phase transition of flux vortices in the superconductors.

关键词： YBCO superconductor paramagnetic Meissner effect (PME)

RESEARCH ON THE FORMATION MECHANISM OF INTERNAL CRACK IN THE CONTINUOUS CASTINg SLAB

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Acta Metallurgica Sinica(English Letters) 2007年第1期20卷 35-39页

作者： g.w. Chang g.C. Jin S.Y. Chen X.D. Yue Department of Materials ＆ Chemical Engineering Liaoning Institute of Technology Jinzhou 121000 China

In view of the periodic bending deformation of solid-liquid interface in the solidification process for continuous casting slab, the variation of temperature gradient and dendritic spacing in the front edge of the solid-liquid interface, and the nucleation and propagation process of crack were studied. It is shown that the bending deformation of the interface results in the temperature field change in the front edge of solid-liquid interface, and the occurrence of temperature gradient along drawing direction results in the growth of secondary dendrites. The initial crack formed during the middle and final stage of solidification may extend to the surface of the casting slab and become an internal crack. The results of the theoretical analysis are basically in agreement with that of the experiment.

关键词： continuous casting dendritic spacing internal crack

RESEARCH OF THE FEEDINg SPEED ADOPTINg CORED-wIRE METHOD TO SPHEROIDIZE DUCTILE IRON MELT

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Acta Metallurgica Sinica(English Letters) 2008年第5期21卷 362-368页

作者： g.w. Chang H.X. wang X.D. Yue H.L. Zhang School of Materials and Chemical Engineering Liaoning University of Technology Jinzhou 121001 China Mechanical and Electronic Engineering Department West Anhui University Liu＇an 237012 China Baotou wen Xin Industry Limited Company Baotou 014000 China Manuscript received 29 August 2007

For settling the question of feeding speed in applying the cored-wire method to spheroidize ductile iron melt, ANSYS software was applied to simulate the heat transfer and mass transfer, and the melt time of the steel strip in the iron melt was determined by linking the heat transfer and mass transfer, and then the feeding speed was calcufated. Conclusions have been drawn that the iron layer was formed on the surface of the cored-wire during the wire-feeding process. The thickness is 0.073 mm when the temperature of the iron melt is 1500℃, the time from formation to remelting of the iron layer is 0.063 s. when the temperature of the iron melt is below 1500℃, the time taken for the steel strip to melt is rapidly shortened. when the temperature of the iron melt is above 1500℃, the variation amplitude of the steel strip melt change with time is gradually diminished. The melt time of the steel strip is rapidly increased with the increase of the steel strip thickness. when the temperature of the iron melt is 1500℃ and the carbon content is 4%, the melt time of a steel strip, which has a thickness of 0.5 mm, is thrice that of a steel strip whose thickness is 0.3 mm. The calculation results of the feeding speed are basically in agreement with the applied feeding speed in the factory.

关键词： Ductile iron Spheroidize Feeding speed Numerical simulation

REVIEw ON RESEARCH AND DEVELOPMENT OF MAgNESIUM ALLOYS

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Acta Metallurgica Sinica(English Letters) 2008年第5期21卷 313-328页

作者： Z. Yang J.P. Li J.X. Zhang g.w. Lorimer J. Robson Department of Materials Science and Engineering Xilan Jiaotong University Xilan 710049 China Department of Materials Science and Engineering Xi＇an Technological University Xi＇an 710032 China Manchester Materials Science Centre University of Manchester Manchester M 1 7HS UK

The current research and development of magnesium alloys is summarized. Several aspects of magnesium alloys are described： cast Mg alloy, wrought Mg alloy, and novel processing. The subjects are discussed individuall... 详细信息

关键词： Magnesium alloys Novel processing grain refined

对霍布斯先生以英文发表的关于“自由、必然和偶然”的论著的反思

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世界哲学 2016年第1期 125-132页

作者： g.w.莱布尼茨[德] 段德智(译) 不详武汉大学哲学学院宗教学系

霍布斯作为西方近代哲学史上著名的唯物主义哲学家,其唯物主义虽然具有比较彻底、比较系统的优点,但也明显地具有机械论性质。一方面,他把物体的一切运动和变化都说成是必然的,从而根本否认偶然性的存在,另一方面他却又强调人及其选择的... 详细信息

霍布斯作为西方近代哲学史上著名的唯物主义哲学家,其唯物主义虽然具有比较彻底、比较系统的优点,但也明显地具有机械论性质。一方面,他把物体的一切运动和变化都说成是必然的,从而根本否认偶然性的存在,另一方面他却又强调人及其选择的"绝对自由"。莱布尼茨依据他的单子论和前定和谐体系,指出霍布斯所理解和阐释的必然性是一种"盲目的和绝对的必然性",这样一种必然性一方面破坏了"道德的必然性"和"人的自由",另一方面又破坏了人们对上帝的"虔诚"。

关键词：自由必然偶然道德的必然性虔诚

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从“休克”失败到“后华盛顿共识”

经济社会体制比较 1999年第2期 8-13页

作者： g.w.科勒德克人民银行研究生部

一、从“没有疗法的休克”到“没有休克的疗法”８０年代末至９０年代初，社会主义国家阵营发生巨变，前苏联及东欧的原社会主义国家纷纷走向市场经济道路。为了实现从原来中央集权的计划经济向市场经济的转轨，当时很多国家选择了所谓... 详细信息

一、从“没有疗法的休克”到“没有休克的疗法”８０年代末至９０年代初，社会主义国家阵营发生巨变，前苏联及东欧的原社会主义国家纷纷走向市场经济道路。为了实现从原来中央集权的计划经济向市场经济的转轨，当时很多国家选择了所谓的“休克疗法”———一种加速私有化...

关键词：转轨经济后华盛顿共识休克疗法东欧

The Danger of Inflated Hypocondria through Self-diagnosis in the Post- COVID-19 Period

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Journal of Psychological Research 2023年第2期5卷 1-3页

作者： wong HC Johnston Ho g.w. Beijing Normal University-Hong Kong Baptist University United International College ZhuhaiGuangdong519087China

***,disinformation,and malinformation(MDM)about depression This editorial article aims to address the hidden dangers of self-diagnosed depression,especially among young people,which has been exacerbated by massive media coverage of depression risks during the COVID-19 *** misinformation and disinformation both refer to the distribution of inaccurate information,misinformation is not intended to cause harm while disinformation ***,malinformation is true information that is intended to cause *** example,it is common for companies to spread both disinformation and malinformation about depression to promote the sales of their products,such as books and therapies.

关键词： diagnosis massive intended

SURVEY OF CANADIAN ARCTIC CAPTAINS: CURRENT STATUS AND RESEARCH NEEDS

维普期刊数据库评论

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SURVEY OF CANADIAN ARCTIC CAPTAINS: CURRENT STATUS AND RESEA...

第19届极区港口与海洋工程国际会议

作者： g.w. Timco R. gorman Canadian Hydraulics Centre Naional Research Council of Canada Ottawa Canada Enfotec Montreal PQ Canada

A survey was made of fourteen Captains of Canadian vessels that operate in Canada’s Arctic to extract their thoughts on the current status of operating in the Arctic and to help identify research needs. There was an overwhelming consensus that research on identifying multi-year ice was the top priority. Predictions of ice movement and ice pressure, and locations of large leads or polynya were also identified as important. There was a wide range of disparity on the amount of ice information that they receive on the Bridge of the vessel. There was a general consensus that improvements in interpretation of satellite imagery and better local detection of multi-year ice were top priorities.

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来源： cnki会议评论

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决策支持系统的未来十年(续)

计算机科学 1990年第5期17卷 49-54页

作者： Peter g.w. Keen 颜永珙

3.D、S和S之间的权衡应当再次强调,照Stabell的话,这就是:现在到了还原D在DSS中地位的时候了。当然,这并非意味着扩展支持可以忽视计算机技术,即第二个S。而仅仅是,它突出了主宰DSS的困境,而且这种困境可能是导致定义问题的根本原因。 ... 详细信息

3.D、S和S之间的权衡应当再次强调,照Stabell的话,这就是:现在到了还原D在DSS中地位的时候了。当然,这并非意味着扩展支持可以忽视计算机技术,即第二个S。而仅仅是,它突出了主宰DSS的困境,而且这种困境可能是导致定义问题的根本原因。 DSS将三个十分不同的努力重点。

关键词：决策支持系统自动化系统